* inftarg.c, infptrace.c: Remove files.

	* inftarg.c, infptrace.c: Remove files.
	* Makefile.in (ALLDEPFILES): Remove inftarg.c and infptrace.c
	(inftarg.o, infptrace.o): Remove rules.
	* gdbcore.h (register_addr): Remove prototype.
	* inferior.h (kill_inferior, store_inferior_registers,
	fetch_inferior_registers, attach, detach, ptrace_wait, child_resume,
	call_ptrace, pre_fork_inferior): Remove prototypes.
	* target.h (child_xfer_memory, child_pid_to_exec_file,
	child_core_file_to_sym_file, child_post_attach,
	child_post_startup_inferior, child_acknowledge_created_inferior,
	child_insert_fork_catchpoint, child_remove_fork_catchpoint,
	child_insert_vfork_catchpoint, child_remove_vfork_catchpoint,
	child_insert_exec_catchpoint, child_remove_exec_catchpoint,
	child_follow_fork, child_reported_exec_events_per_exec_call,
	child_has_exited, child_thread_alive): Remove prototypes.